单项选择题
The average acreage per farm was approximately 140 in 1910 and 220 in1950.The ration of the total farmland acreage in 1910 to the total in 1950 was most nearly()
A.A B.B C.C D.D E.E
A. $7.00 B. $10.00 C. $17.50 D. $35.00 E. $70.00